Javascript array search and remove string

Question

I have   var array   new Array    array push  A    array push  B    array push  C      I want to be able to do something like   array remove  B     but there is no remove function  How do I accomplish this

User · Answer

use array splice    array splice index   howMany   element1         elementN      array splice index     SpiderMonkey Firefox extension    array splice 1 1    Source       https   developer mozilla org en-US docs Web JavaScript Reference Global Objects Array splice

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I m actually updating this thread with a more recent 1-line solution    let arr     A    B    C    arr   arr filter e   gt  e      B       will return   A    C     The idea is basically to filter the array by selecting all elements different to the element you want to remove    Note  will remove all occurrences    EDIT   If you want to remove only the first occurence    t     A    B    C    B    t splice t indexOf  B    1      will return   B   and t is now equal to   A    C    B

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DEMO  You need to find the location of what you re looking for with  indexOf   then remove it with  splice    function remove arr  what        var found   arr indexOf what        while  found     -1            arr splice found  1           found   arr indexOf what            var array   new Array    array push  A    array push  B    array push  C          remove array   B    alert array         This will take care of all occurrences

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const changedArray   array filter  function value      return value      B        or you can use    const changedArray   array filter   value    gt  value      B      The changedArray will contain the without value  B

User · Answer

You have to write you own remove   You can loop over the array  grab the index of the item you want to remove  and use splice to remove it   Alternatively  you can create a new array   loop over the current array  and if the current object doesn t match what you want to remove  put it in a new array

User · Answer

Simply   array splice array indexOf item   1

User · Answer

Simple solution  ES6   If you don t have duplicate element  Array prototype remove   function elem      var indexElement   this findIndex el   gt  el     elem     if  indexElement    -1      this splice indexElement  1     return this          Online demo  fiddle

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List of One Liners  Let s solve this problem for this array   var array     A    B    C      1  Remove only the first  Use If you are sure that the item exist  array splice array indexOf  B    1     2  Remove only the last  Use If you are sure that the item exist  array splice array lastIndexOf  B    1     3  Remove all occurrences   array   array filter v   gt  v      B

User · Answer

use   array splice 2  1     This removes one item from the array  starting at index 2  3rd item

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Loop through the list in reverse order  and use the  splice method   var array     A    B    C       Test var search term    B    for  var i array length-1  i gt  0  i--        if  array i      search term            array splice i  1              break           lt -- Uncomment  if only the first term has to be removed           The reverse order is important when all occurrences of the search term has to be removed  Otherwise  the counter will increase  and you will skip elements   When only the first occurrence has to be removed  the following will also work   var index   array indexOf search term          lt -- Not supported in  lt IE9 if  index     -1        array splice index  1

[javascript] Javascript array search and remove string?

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